package ch9;

/**
 * Created by lyk on 2016/10/25.
 * Package name: ch9
 * Porject name: untitled1
 */

import javax.swing.*;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

/**
 * @version 1.03 2007-06-12
 * @author Cay Horstmann
 */
public class ColorChooserTest
{
    public static void main(String[] args)
    {
        EventQueue.invokeLater(new Runnable()
        {
            public void run()
            {
                ColorChooserFrame frame = new ColorChooserFrame();
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setVisible(true);
            }
        });
    }
}

/**
 * A frame with a color chooser panel
 */
class ColorChooserFrame extends JFrame
{
    public ColorChooserFrame()
    {
        setTitle("ColorChooserTest");
        setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);

        // add color chooser panel to frame

        ColorChooserPanel panel = new ColorChooserPanel();
        add(panel);
    }

    public static final int DEFAULT_WIDTH = 300;
    public static final int DEFAULT_HEIGHT = 200;
}

/**
 * A panel with buttons to pop up three types of color choosers
 */
class ColorChooserPanel extends JPanel
{
    public ColorChooserPanel()
    {
        JButton modalButton = new JButton("Modal");
        modalButton.addActionListener(new ModalListener());
        add(modalButton);

        JButton modelessButton = new JButton("Modeless");
        modelessButton.addActionListener(new ModelessListener());
        add(modelessButton);

        JButton immediateButton = new JButton("Immediate");
        immediateButton.addActionListener(new ImmediateListener());
        add(immediateButton);
    }

    /**
     * This listener pops up a modal color chooser
     */
    private class ModalListener implements ActionListener
    {
        public void actionPerformed(ActionEvent event)
        {
            Color defaultColor = getBackground();
            Color selected = JColorChooser.showDialog(ColorChooserPanel.this, "Set background",
                    defaultColor);
            if (selected != null) setBackground(selected);
        }
    }

    /**
     * This listener pops up a modeless color chooser. The panel color is changed when the user
     * clicks the Ok button.
     */
    private class ModelessListener implements ActionListener
    {
        public ModelessListener()
        {
            chooser = new JColorChooser();
            dialog = JColorChooser.createDialog(ColorChooserPanel.this, "Background Color",
                    false /* not modal */, chooser, new ActionListener() // OK
                            // button
                            // listener
                    {
                        public void actionPerformed(ActionEvent event)
                        {
                            setBackground(chooser.getColor());
                        }
                    }, null /* no Cancel button listener */);
        }

        public void actionPerformed(ActionEvent event)
        {
            chooser.setColor(getBackground());
            dialog.setVisible(true);
        }

        private JDialog dialog;
        private JColorChooser chooser;
    }

    /**
     * This listener pops up a modeless color chooser. The panel color is changed immediately when
     * the user picks a new color.
     */
    private class ImmediateListener implements ActionListener
    {
        public ImmediateListener()
        {
            chooser = new JColorChooser();
            chooser.getSelectionModel().addChangeListener(new ChangeListener()
            {
                public void stateChanged(ChangeEvent event)
                {
                    setBackground(chooser.getColor());
                }
            });

            dialog = new JDialog((Frame) null, false /* not modal */);
            dialog.add(chooser);
            dialog.pack();
        }

        public void actionPerformed(ActionEvent event)
        {
            chooser.setColor(getBackground());
            dialog.setVisible(true);
        }

        private JDialog dialog;
        private JColorChooser chooser;
    }
}
